class EmailInfo:
    def __init__(self, email_type=None, email_address=None, request_url=None, client_id=None, refresh_token=None):
        self.email_type = email_type
        self.email_address = email_address
        self.client_id = client_id
        self.refresh_token = refresh_token
        self.request_url = request_url

    def set_email_address(self, email_address):
        self.email_address = email_address

    def set_client_id(self, client_id):
        self.client_id = client_id

    def set_refresh_token(self, refresh_token):
        self.refresh_token = refresh_token

    def set_request_url(self, request_url):
        self.request_url = request_url

    def to_string(self):
        return (
            f"EmailInfo("
            f"email_type={self.email_type}, "
            f"email_address={self.email_address}, "
            f"request_url={self.request_url}, "
            f"client_id={self.client_id}, "
            f"refresh_token={self.refresh_token})"
        )